外文翻譯----空氣污染的虛擬現(xiàn)實(shí)模型-全文預(yù)覽
【正文】 necessary to respect the following requirements for the VRML _le creation: 1. Coordinate systems: Both the Matlab system and the VRML use the righthanded Cartesian coordinate system, but rotated around the xaxis as given in Fig. 3 Figure 3: Coordinate systems in Matlab and VRML 2. Units: While in the Matlab environment it is possible to use any unit system, VRML expects that the length values are given in meters, angles in radians and time in seconds 3. Nodes marking: It is possible to municate with the selected set of the VRML nodes in existing virtual world from Matlab and its Virtual Reality Toolbox provided that the nodes in VRML are named using the DEF keyword. Having in mind these rules it is possible to export a 3D model created in the Matlab environment enabling visualization by mesh or surf mands to VRML environment in a very simple way using vrml(handle。VIRTUAL REALITY MODEL OF AIR POLLUTION M. Mudrova, A. Prochazka, and M. Kolnova Institute of Chemical Technology, Department of Computing and Control Engineering Abstract The paper is devoted to the description of virtual reality model generation using the system Matlab and its Virtual Reality Toolbox. The selected possibilities of interconnection of both systems (Matlab and VRML) are demonstrated by means of visualisation of twodimensional interpolation of air pollution data. 1 Introduction Presentation of threedimensional data currently represents a very topical theme in many areas, and not only technical ones. Clear and intelligible arrangements of information in the 3D model is necessary for example in medicine and it is used more and more frequently in other areas. Results of information processing using plex mathematical tools can naturally lead to formulation of a threedimensional graphical model. It has been possible to observe or process spatial data for all users of personal puters since the VRML (Virtual Reality Modeling Language) had been developed [5, 6, 7]. The most frequently used Inter browsers (MS Inter Explorer and Netscape Navigator) have a VRML viewer built in. There are also many other freeware plugin modules available on the Inter with which one can enter the virtual world and observe it and possibly control it as well. Thanks to these facts, it is expected that areas of applications of 3D modeling will grow.
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